Sock



FIG. 1 is a back view of a sock according to the present invention.

FIG. 2 is a bottom view of the sock of FIG. 1 .

FIG. 3 is a perspective view of the sock of FIG. 1 .

FIG. 4 is a first side view of the sock of FIG. 1 ; and,

FIG. 5 is a second side view of the sock of FIG. 1 .

The broken lines in the drawings depict portions of a sock and form no part of the claimed invention. 

CLAIM The ornamental design for a sock, as shown and described. 